package financeiro.web.filter;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import org.hibernate.SessionFactory;

import financeiro.util.HibernateUtil;

public class ConexaoHibernateFilter implements Filter {

	private SessionFactory sf;

	public ConexaoHibernateFilter() {
	}

	@Override
	public void destroy() {
	}

	@Override
	public void doFilter(ServletRequest servletRequest,
			ServletResponse servletResponse, FilterChain filterChain)
			throws ServletException {
		try {
			this.sf.getCurrentSession().beginTransaction();
			filterChain.doFilter(servletRequest, servletResponse);
			this.sf.getCurrentSession().getTransaction().commit();
			this.sf.getCurrentSession().close();
		} catch (Throwable e) {
			try {
				if (this.sf.getCurrentSession().getTransaction().isActive()) {
					this.sf.getCurrentSession().getTransaction().rollback();
				}
			} catch (Throwable e2) {
				e2.printStackTrace();
			}
			throw new ServletException(e);
		}

	}

	@Override
	public void init(FilterConfig config) throws ServletException {
		this.sf = HibernateUtil.getSessionFactory();
	}

}
